MRP 1x BB Fitting Upper Guide Chain Device: Developed with World Cup powerhouse Adam Craig, the 1.x is purpose-built for cross country riding with a 1x 9 drive train. If you are running 1x 9 & dont need a bash guard, this is the ticket. No more homemade contraptions needed! 32-36T: 58 grams 32-40T: 62 grams Black or White Upper Guide Chainline adjustment BB-Mount only
Includes:: spacers for fine chainline adjustability Looks & works great with a new MRP chainring!